Simple. It takes a bit time to code, but:Have the original freeware game as a "bonus" mode for the commercial version, for if you want to take a break from your kingdom management, graphical beauty and fancy colors, and long to the simplicity of the freeware version without having to quit the game and load up the freeware version itself.This version includes all alpha features and game balance, as pixelated graphics.Maybe a few little changes; e.g. if you want to change the layout of the mouse cursor later in the beta, then keep that mouse in the classic mode. Just for the sake of uniformity.

Seems like it would be a lot of coding just to duplicate something that already exists (since the alpha was in Gamemaker and the beta/final are in Unity, it would have to be ported, and any porting process necessarily involves lots of bugs). Also, I think the devs have said they don't want to put the alpha graphics back in, but if support for custom tilesets is ever restored then I'm sure someone will make it happen.